"Rod Speed" wrote in message
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"Andrew" wrote in message
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On 23/03/2021 09:03, Jim GM4DHJ ... wrote:
On 22/03/2021 18:58, Scott wrote:
How does my car clock work? It cannot be quartz or radio controlled
as it runs slightly fast. It cannot be synchronous because the supply
is DC. Is there any form of adjustment to get it to run to time?

NEAR ENOUGH IS GOOD ENOUGH YOU HAVE TO RESET IT TWICE A YEAR ANYWAY

Having slightly fast is usually not an issue if you need to get
somewhere at a particular time.

Our schools have time of day based speed limits.

That can bite you with those.

Are the speed limits signposted (eg an electronic sign whose numbers change
at different times of day), or does "everybody just know" what/when the
speed limits are?

Variable speed limits according to time of day outside a school is a very
good idea: it saves the UK convention of setting a speed limit which is
absurdly low for most of the day or night, except for the critical hours
when schools are coming or going.